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238| Dräger-<strong>Tubes</strong> for short-term measurements<br />
Phosphine 0.1/c<br />
Order No. 81 03 711<br />
Application Range<br />
Standard Measuring Range: 0.5 to 3 ppm / 0.1 to 1.0 ppm<br />
Number of Strokes n: 1 / 3<br />
Time for Measurement: approx. 1 min / approx. 2.5 min<br />
Standard Deviation: ± 10 to 15 %<br />
Color Change:<br />
yellow ä red<br />
Ambient Operating Conditions<br />
Temperature: 2 to 40 °C<br />
Absolute Humidity:<br />
< 40 mg H 2 O / L<br />
Reaction Principle<br />
HgCI 2 + PH 3 ä Hg-phosphide + HCI<br />
HCI + pH-Indicator ä red reaction product<br />
Cross Sensitivity<br />
A maximum of 6 ppm sulphur dioxide or 15 ppm hydrogen chloride<br />
have no influence on the reasing. Higher concentration result in<br />
plus errors. Ammonia (>100 ppm) result in minus errors. Hyrogen<br />
sulphide and Arsine are indicated with different sensitivity. 30 ppm<br />
hydrocyanic acid does not affect.<br />
D-21246-2015
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